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Diffstat (limited to 'ltp_framework/lib/system_specific_hugepages_info.c')
-rw-r--r--ltp_framework/lib/system_specific_hugepages_info.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/ltp_framework/lib/system_specific_hugepages_info.c b/ltp_framework/lib/system_specific_hugepages_info.c
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+++ b/ltp_framework/lib/system_specific_hugepages_info.c
@@ -0,0 +1,93 @@
+/*
+ *
+ * Copyright (c) International Business Machines Corp., 2009
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * DESCRIPTION
+ * get_no_of_hugepages() --> Return No. of hugepages for this systems
+ * from /proc/meminfo
+ * hugepages_size() --> Return Hugepages Size for this system
+ * from /proc/meminfo
+ */
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <test.h>
+
+int get_no_of_hugepages() {
+ #ifdef __linux__
+ FILE *f;
+ char buf[BUFSIZ];
+
+ f = popen("grep 'HugePages_Total' /proc/meminfo | cut -d ':' -f2 | tr -d ' \n'", "r");
+ if (!f)
+ tst_brkm(TBROK, NULL,
+ "Could not get info about Total_Hugepages from /proc/meminfo");
+ if (!fgets(buf, 10, f)) {
+ fclose(f);
+ tst_brkm(TBROK, NULL,
+ "Could not read Total_Hugepages from /proc/meminfo");
+ }
+ pclose(f);
+ return(atoi(buf));
+ #else
+ return -1;
+ #endif
+}
+
+int get_no_of_free_hugepages() {
+ #ifdef __linux__
+ FILE *f;
+ char buf[BUFSIZ];
+
+ f = popen("grep 'HugePages_Free' /proc/meminfo | cut -d ':' -f2 | tr -d ' \n'", "r");
+ if (!f)
+ tst_brkm(TBROK, NULL,
+ "Could not get info about HugePages_Free from /proc/meminfo");
+ if (!fgets(buf, 10, f)) {
+ fclose(f);
+ tst_brkm(TBROK, NULL,
+ "Could not read HugePages_Free from /proc/meminfo");
+ }
+ pclose(f);
+ return(atoi(buf));
+ #else
+ return -1;
+ #endif
+}
+
+int hugepages_size() {
+ #ifdef __linux__
+ FILE *f;
+ char buf[BUFSIZ];
+
+ f = popen("grep 'Hugepagesize' /proc/meminfo | cut -d ':' -f2 | tr -d 'kB \n'", "r");
+ if (!f)
+ tst_brkm(TBROK, NULL,
+ "Could not get info about HugePages_Size from /proc/meminfo");
+ if (!fgets(buf, 10, f)) {
+ fclose(f);
+ tst_brkm(TBROK, NULL,
+ "Could not read HugePages_Size from /proc/meminfo");
+ }
+ pclose(f);
+ return(atoi(buf));
+ #else
+ return -1;
+ #endif
+}